package com.itheima.reggie.controller;


import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.EmployeeService;

import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.time.LocalDateTime;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;
//员工登录
    @PostMapping("/login")
    public R login(HttpServletRequest request,@RequestBody Employee employee){
        //1、将页面提交的密码password进行md5加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        //2、根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername,employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);
        //3、如果没有查询到则返回登录失败结果
        if(emp == null){
            return R.error("登录失败");
        }
        //4、密码比对，如果不一致则返回登录失败结果
        if(!emp.getPassword().equals(password)) {
            return R.error("登录失败");
        }
        //查看员工状态，如果为已禁用状态，则返回员工已禁用结果
        if(emp.getStatus() == 0){
            return R.error("账号已禁用");
        }
        //登录成功，将员工id存入Session并返回登录成功结果
        request.getSession().setAttribute("employee",emp.getId());

        return R.success(emp);
}
//登出
    @PostMapping("/logout")
 public R<String> logout(HttpServletRequest request){
        //清理Session中保存的当前登录员工的id
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }
//    新增员工
    @PostMapping
    public R<String> save(HttpServletRequest request,@RequestBody Employee employee){
        log.info("新增员工,员工信息={}",employee.toString());
//        设置初始密码，进行MD5加密处理
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));
      /*  employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());

//        获得当前用户登录的id
        Long empId = (Long) request.getSession().getAttribute("employee");
        employee.setCreateUser(empId);
        employee.setUpdateUser(empId);*/
        employeeService.save(employee);
        return R.success("新增员工成功");
    }

    /**
     * 员工信息分页查询
     * @param page 当前查询页码
     * @param pageSize 每页展示记录数
     * @param name 员工姓名 - 可选参数
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page,int pageSize,String name){
        log.info("page={},pageSize={},name={}",page,pageSize,name);
//        分页
        Page pageInfo = new Page(page, pageSize);

//        查询
        LambdaQueryWrapper<Employee> wrapper = new LambdaQueryWrapper<>();
//        模糊查询
        wrapper.like(StringUtils.isNotEmpty(name),Employee::getUsername,name);
        wrapper.orderByDesc(Employee::getUpdateTime);
        employeeService.page(pageInfo,wrapper);
        return R.success(pageInfo);

    }

//    根据id修改员工信息
    @PutMapping
    public R<String> update(HttpServletRequest request,@RequestBody Employee employee){
        log.info(employee.toString());
        long id = Thread.currentThread().getId();
        log.info("线程id为：{}",id);
//        Long empId = (Long) request.getSession().getAttribute("employee");

//        employee.setUpdateTime(LocalDateTime.now());
//        employee.setUpdateUser(empId);
        employeeService.updateById(employee);

        return R.success("员工信息更改成功");
    }

//    根据id查询员工信息,用于数据回显
    @GetMapping("{id}")
    public R getById(@PathVariable("id") Long id){
        log.info("查询员工信息");
        Employee emp = employeeService.getById(id);
        if(emp!=null){
            return R.success(emp);
        }
        return R.error("没有查询到该员工信息");

    }
}
